Would you risk getting splashed to watch a train scoop water?
Chapter 1

The fireman's rolling furnace

Chapter 2

The engineer's command center

Chapter 3

The mind-bending physics of water and draft

Chapter 4

Life on the footplate

Ch 3 · The mind-bending physics of water and draft
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chrisd The steam locomotive blastpipe draft system

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chrisd The Mechanical Lubricator

We roll and we pump! (Oh-oh, yeah!) / The faster we go, the more the oil flows! (Smooth ride!)

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chrisd Steam injectors pump water into high-pressure boilers without mechanical parts

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How the Giffard injector defies physics

chrisd Steam shooting through a nozzle creates a vacuum that sucks up cold water, condensing it to force open the boiler's check valve.

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The blastpipe draft trick fanning flames

chrisd The blastpipe nozzle directs escaping steam upward to pull heat through the boiler

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The Thirsty Tender
BETA

chrisd Pump water from the tender to discover how steam pressure powers a massive locomotive.

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Fun Fact

Scooping water splash: If a fireman forgot to raise the water scoop in time, the tender would violently overflow, soaking the rear of the cab and passenger windows!

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Gossip

Which physics trick do you find more mind-blowing?

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Quiz

How does a steam injector manage to push water into a highly pressurized boiler?

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Gossip

Would you risk getting splashed to watch a train scoop water?

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Quiz

Who patented the revolutionary steam injector in 1858, eliminating the need for mechanical water pumps?

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Quiz

What is the main benefit of using exhaust steam to create a vacuum draft?

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Quiz

Where is the blastpipe located on a steam locomotive?

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Quiz

Who invented the water trough system that allowed steam trains to refill their tenders while moving?

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Quiz

What physical force drove water up the scoop and into the tender from a track pan?

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Quiz

How were most heavy mechanical lubricators powered while the train was running?

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Quiz

Why did steam locomotives require specialized mechanical lubricators?

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